brake lights on rear of car will not work

2004 HYUNDAI SONATA
150,000 MILES
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EVE_N
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  • 1 POST
Change brake light switch rear window brake light works but brake lights on rear of car will not work
Aug 1, 2016 at 12:41 PM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
Try swapping them out with new ones. If the third brake light/collision avoidance light is working, that means the switch is working. Check the grounds and the connections at the brake light pigtails.
Mar 22, 2021 at 10:48 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That is usually caused by a bad turn signal switch. The lower two brake lights pass through that switch so the turn signals can cancel the brake lights when necessary. It really should be tested in and out of the switch before changing anything.
Mar 22, 2021 at 10:48 AM
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